diff --git a/.gitignore b/.gitignore
index 040c71e..bcbbd6f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -146,6 +146,7 @@
 /lib/d/test/serialization_benchmark
 /lib/d/test/transport_test
 /lib/d/unittest/
+/lib/dart/coverage
 /lib/dart/**/.packages
 /lib/dart/**/packages
 /lib/dart/**/.pub/